CN106589728B - A kind of liquid-state mulch film preparation and preparation method thereof - Google Patents
A kind of liquid-state mulch film preparation and preparation method thereof Download PDFInfo
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- CN106589728B CN106589728B CN201611162520.8A CN201611162520A CN106589728B CN 106589728 B CN106589728 B CN 106589728B CN 201611162520 A CN201611162520 A CN 201611162520A CN 106589728 B CN106589728 B CN 106589728B
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- Prior art keywords
- liquid
- mulch film
- water
- cyclodextrin
- state mulch
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- 238000002360 preparation method Methods 0.000 title claims abstract description 68
- 239000002362 mulch Substances 0.000 title claims abstract description 49
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000006213 oxygenation reaction Methods 0.000 claims abstract description 55
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002245 particle Substances 0.000 claims abstract description 27
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920002472 Starch Polymers 0.000 claims abstract description 16
- 239000008107 starch Substances 0.000 claims abstract description 16
- 235000019698 starch Nutrition 0.000 claims abstract description 16
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 13
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 13
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 13
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 13
- 238000004321 preservation Methods 0.000 claims abstract description 12
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims abstract description 11
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 11
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims abstract description 11
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 53
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical class OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims description 46
- 239000003795 chemical substances by application Substances 0.000 claims description 35
- 239000000499 gel Substances 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 30
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 24
- 229920000858 Cyclodextrin Polymers 0.000 claims description 23
- 239000001116 FEMA 4028 Substances 0.000 claims description 23
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims description 23
- 229960004853 betadex Drugs 0.000 claims description 23
- 239000011247 coating layer Substances 0.000 claims description 22
- 239000000419 plant extract Substances 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 18
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 17
- 239000011575 calcium Substances 0.000 claims description 17
- 229910052791 calcium Inorganic materials 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 17
- 239000000853 adhesive Substances 0.000 claims description 16
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 14
- 241001474374 Blennius Species 0.000 claims description 13
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 12
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 12
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 11
- 229920000159 gelatin Polymers 0.000 claims description 11
- 239000008273 gelatin Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical group C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims description 9
- 238000004132 cross linking Methods 0.000 claims description 9
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 9
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 9
- 229940069328 povidone Drugs 0.000 claims description 9
- 241001116389 Aloe Species 0.000 claims description 8
- 235000011399 aloe vera Nutrition 0.000 claims description 8
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 7
- 240000002234 Allium sativum Species 0.000 claims description 6
- 235000004611 garlic Nutrition 0.000 claims description 6
- 239000001814 pectin Substances 0.000 claims description 6
- 235000010987 pectin Nutrition 0.000 claims description 6
- 229920001277 pectin Polymers 0.000 claims description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 239000008236 heating water Substances 0.000 claims description 5
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 claims description 5
- -1 polypropylene glycerol Polymers 0.000 claims description 5
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 claims description 5
- 229940048086 sodium pyrophosphate Drugs 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 235000019818 tetrasodium diphosphate Nutrition 0.000 claims description 5
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 5
- 239000004343 Calcium peroxide Substances 0.000 claims description 4
- 235000019402 calcium peroxide Nutrition 0.000 claims description 4
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 claims description 4
- 239000000284 extract Substances 0.000 claims description 4
- 229940045872 sodium percarbonate Drugs 0.000 claims description 4
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- 229920001214 Polysorbate 60 Polymers 0.000 claims description 3
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 claims description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 3
- 229920000053 polysorbate 80 Polymers 0.000 claims description 3
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 3
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 2
- 229910017604 nitric acid Inorganic materials 0.000 claims 2
- 235000009024 Ceanothus sanguineus Nutrition 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- 240000003553 Leptospermum scoparium Species 0.000 claims 1
- 235000015459 Lycium barbarum Nutrition 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- RBNPOMFGQQGHHO-UHFFFAOYSA-N glyceric acid Chemical compound OCC(O)C(O)=O RBNPOMFGQQGHHO-UHFFFAOYSA-N 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229920001451 polypropylene glycol Polymers 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 238000013268 sustained release Methods 0.000 abstract description 10
- 239000012730 sustained-release form Substances 0.000 abstract description 10
- 239000000243 solution Substances 0.000 description 39
- 239000002689 soil Substances 0.000 description 20
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 16
- 239000000292 calcium oxide Substances 0.000 description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 16
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- 238000004026 adhesive bonding Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000003337 fertilizer Substances 0.000 description 8
- 239000012456 homogeneous solution Substances 0.000 description 8
- 238000012216 screening Methods 0.000 description 8
- 229910021645 metal ion Inorganic materials 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 229920001661 Chitosan Polymers 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 4
- 108010010803 Gelatin Proteins 0.000 description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 4
- 244000269722 Thea sinensis Species 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 229960000935 dehydrated alcohol Drugs 0.000 description 4
- 229960004756 ethanol Drugs 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- 235000019322 gelatine Nutrition 0.000 description 4
- 235000011852 gelatine desserts Nutrition 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 235000011837 pasties Nutrition 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 230000003578 releasing effect Effects 0.000 description 3
- 229940092665 tea leaf extract Drugs 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000002688 persistence Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- HSRJKNPTNIJEKV-UHFFFAOYSA-N Guaifenesin Chemical compound COC1=CC=CC=C1OCC(O)CO HSRJKNPTNIJEKV-UHFFFAOYSA-N 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 235000010081 allicin Nutrition 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002363 herbicidal effect Effects 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000036737 immune function Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 229930182490 saponin Natural products 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000003516 soil conditioner Substances 0.000 description 1
- 230000005945 translocation Effects 0.000 description 1
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The present invention relates to field of agricultural cultivation, a kind of liquid-state mulch film preparation and preparation method thereof is disclosed.The liquid-state mulch film preparation includes following components: polyvinyl alcohol 15-25wr%, silica solution 3-7wt%, soluble starch 3-7wt%, antibacterial oxygenation particle 5-15wt%, carboxymethyl cellulose 3-7wt%, glutaraldehyde 1-3wt%, emulsifier 1-3wt%, defoaming agent 0.5-1.5wt%, water surplus.Liquid-state mulch film preparation good film-forming property of the invention has outstanding heat preservation Water-saving effect.And it also has the multiple functions such as antibacterial, oxygenation, sustained release.
Description
Technical field
The present invention relates to field of agricultural cultivation, more particularly to a kind of liquid-state mulch film preparation and preparation method thereof.
Background technique
Plastic film is mulch of the agriculture field using wide scope the most, it can play the role of radix saposhnikoviae, heat preservation, water conservation.
But the natural degradation of plastic film is poor, residual can destroy soil texture in the soil, cause white pollution.And to mulch
Again time-consuming and laborious when being laid with and being recycled, efficiency is lower.There are also degradable mulch currently on the market, but its cost
Higher, it is more difficult to promote.
Recent years liquid-state mulch film is developed rapidly, liquid-state mulch film can absorb heat heat, preserve soil moisture, the effect of keeping a full stand of seedings, and have
Grogs can be coupled to ideal aggregate, improve the capillarity of soil particle by potent adhesive capacity, improve the logical of soil
Permeability becomes soil conditioner.And liquid-state mulch film can natural degradation, it is environmentally protective, and its using when need to only be configured to liquid
Preparation is sprayed, time saving and energy saving without recycling.
But liquid-state mulch film currently on the market is not mature enough, and compares plastic film, there is also some shortcomings.Such as:
1, the film forming after its sprinkling of current some liquid-state mulch films in earth's surface is poor, heat preservation, water holding capacity to soil
It is more insufficient.
2, current liquid-state mulch film function is more single, subsequent to apply due to forming a film in soil surface after spraying mulch
Due to the barrier of mulch when the reagents such as fertilizer, herbicide, effect is poor.
Therefore, it is necessary to develop a kind of good film-forming property, heat preservation Water-saving effect is good；And multi-functional liquid-state mulch film.
Summary of the invention
The purpose of the present invention is to provide a kind of liquid-state mulch film preparations and preparation method thereof.Liquid-state mulch film preparation of the invention
Good film-forming property has outstanding heat preservation Water-saving effect.And it also has the multiple functions such as antibacterial, oxygenation, sustained release.
The specific technical proposal of the invention is: a kind of liquid-state mulch film preparation, raw material includes following components:
Polyvinyl alcohol 15-25wr%,
Silica solution 3-7wt%,
Soluble starch 3-7wt%,
Antibacterial oxygenation particle 5-15wt%,
Carboxymethyl cellulose 3-7wt%,
Glutaraldehyde 1-3wt%,
Emulsifier 1-3wt%,
Defoaming agent 0.5-1.5wt%,
Water surplus.
Liquid-state mulch film of the invention is fine using polyvinyl alcohol, silica solution, soluble starch, antibacterial oxygenation particle, carboxymethyl
It ties up element etc. and is used as primary raw material.The film forming of above-mentioned substance, good water-retaining property.It, can be by liquid by the effect of glutaraldehyde after sprinkling
Various substances in mulch and the moieties crosslinking in soil are got up, and form a tunic, which can be attached to soil table
Face plays the role of heat preservation and increases moisture in the soil, water conservation, and it is with capillary channel, and gas permeability is preferable.The natural degradation of its each raw material simultaneously
Property is preferable, environmentally protective.
Wherein, antibacterial oxygenation particle also has the function of antibacterial, oxygenation, is able to suppress the taste of part harmful bacteria in soil
It is raw, and can oxygen release, improve oxygen content in soil, deposit into plant growth.
Preferably, the concentration of the silica solution is 20-30wt%.
Preferably, the emulsifier is Tween-60, Tween-80, Span -60 or Span-80；The defoaming agent is emulsification
Silicone oil, dimethyl silicone polymer, polypropylene glycerol aether or polyoxyethylene polyoxypropylene glycerin ether.
Preferably, the antibacterial oxygenation particle successively includes release layer, slow release layer and coating layer from the inside to the outside；The quick-release
Layer is by following material composition: chemical enhancement agent 35-45wt%, natural antibacterial plant extracts 5-15wt%, seaweed-aloe are compound
Gel carrier 40-46wt%, modified oxidized calcium 4-6wt%, adhesive 1-3wt%；The slow release layer is by following material composition: changing
Learn oxygenation agent 35-45wt%, natural antibacterial plant extracts 5-15wt%, modified beta-cyclodextrin 43-53wt%, adhesive 1-
3wt%；The coating layer is chitosan-starch-gelatin cross linking membrane.
Antibacterial agent and oxygenation agent are combined into one by the present invention, select seaweed-aloe plural gel, modified beta-cyclodextrin respectively
Carrier as release layer and slow release layer.Above two carrier not only has slow release effect, and load capacity is high；And itself also has
Antibacterial action.Wherein, seaweed-aloe plural gel carrier main component is marine algae extract and aloe gel, contains polysaccharide
Class, pectin substance have outstanding antibacterial, immune function, and the part harmful bacteria being able to suppress in soil also can be by plant roots
Itself resistance of portion influx and translocation plant and from mushroom, insects corrode.Modified beta-cyclodextrin also has antibacterial action.
Chemical enhancement agent can sustained release oxygen, enhance plant root respiration, promote growth.Natural antibacterial plant mentions
Take object that can further increase antibiotic property.And above-mentioned substance is harmless to environment, human body.
Coating layer is chitosan-starch-gelatin cross linking membrane, and chitosan also has anti-oxidant and antibacterial action.
In addition, oxygenation agent common at present, is usually mixed to prepare with fertilizer.Some fertilizer with slow-release function,
Its oxygenation agent also has slow release effect simultaneously.But most of slow release fertilizer slow release effect is not ideal enough, especially in soil
It is easy to cause be released early period after middle water suction, oxygenation agent is consumed release, leads to oxygenation persistence degradation.Another party
Face, the oxygenation agent positioned at granulated fertilizer core part, the speed for but entering fertilizer core due to moisture penetration is slower and oxygenation
Agent needs to penetrate through the part of fertilizer outer layer, and oxygenation agent release is short of power, and the oxygenation effect in later period is caused to be much worse than early period.
Oxygenation agent of the invention can be used alone, and also may be added to that in fertilizer.Oxygenation agent of the invention has three-decker.
Wherein, coating layer is chitosan-starch-gelatin cross linking membrane, and the carrier of slow release layer is modified beta-cyclodextrin.In modified beta-cyclodextrin
Portion has hydrophobic cavity, can play certain retarding action to the infiltration of moisture.The barrier of coating layer and modified β-ring paste
Essence slow releasing function, the two cooperation under so that oxygenation agent early period meet water after will not be released rapidly, sustained release rate is more steady
Fixed, sustained release persistence is stronger.The carrier of release layer is seaweed-aloe plural gel carrier, and seaweed-aloe plural gel carries
Body has been also loaded modified oxidized calcium.Heat can be discharged after modified oxidized calcium water suction, these heats can accelerate oxygenation agent in water
Dissolution, so that the release for oxygenation agent provides power, the defect for overcoming later period oxygenation agent releasing effect poor.
Preferably, the modified beta-cyclodextrin the preparation method comprises the following steps: beta-cyclodextrin to be added to the water of its 15-25 times of quality
In, it is then heated to 60-70 DEG C of heat preservation, obtains beta-cyclodextrin solution；Respectively by silver nitrate solution, copper nitrate solution and ferric nitrate
Solution, which is added in beta-cyclodextrin solution, stirs 1-2h, carries out adsorption of metal ions；It is finally cooled to room temperature, is centrifugated, is done
Modified beta-cyclodextrin is made after dry, crushing.
Beta-cyclodextrin is modified by the above method, and there are many different by absorption, complexing, grafting for beta-cyclodextrin molecule
Metal ion, these metal ions not only itself have outstanding antibiotic property, but also the metal ion of these different prices exists
Beta-cyclodextrin can generate micro- magnetic field after absorbing water, and the antibacterial that can be improved other antimicrobial components in oxygenation agent in magnetic field is living
Property, promote antibacterial effect.
Preferably, the mass ratio of the beta-cyclodextrin and silver nitrate, copper nitrate and ferric nitrate is 10:0.5-1.5:0.5-
1.5:0.4-0.8；And the adding speed of silver nitrate solution, copper nitrate solution and iron nitrate solution is 5-10mL/min.
Preferably, the natural antibacterial plant extracts be oil tea leaf extract, garlic P.E, in pectin at least
It is a kind of.
Containing the substances such as tea saponin, tea polyphenols in oil tea leaf extract, there are also allicins in garlic P.E, have anti-
Bacterium, antioxidation.And oil tea leaf extract, garlic P.E, pectin itself belong to natural extract, nonhazardous, and
Good anti-bacterial effect.
Preferably, the chemical enhancement agent is at least one of calper calcium peroxide, urea peroxide and SODIUM PERCARBONATE；It is described viscous
Mixture is povidone.General adhesive is dissolved in water use.Since oxygenation agent should not meet water to the present invention during the preparation process, and
Povidone is dissolved in ethyl alcohol, therefore is more appropriate selection as adhesive.
Preferably, the seaweed-aloe plural gel carrier is the preparation method comprises the following steps: taking seaweed to shred and being put into 50-
In the water of 100 times of quality, 20-30min is heated at 95-105 DEG C；Seaweed is transferred to the concentration of its 5-15 times of quality after filtering
To impregnate 0.5-1.5h at 50-60 DEG C, obtaining viscous liquid in the sodium pyrophosphate solution of 3-5wt%；By viscous liquid
Being concentrated into solid content is 45-55wt%, and the aloe gel of its 0.5-1.5 times of quality is added into viscous liquid and is stirred equal
It is even；Then it is kept the temperature at 40-50 DEG C, the sodium bicarbonate of adding liquid gross mass 1-3% is stirred to react 10-20min, after reaction
Liquid pH value is adjusted to neutrality, is finally dried to obtain seaweed-aloe plural gel carrier.
Seaweed of the invention-aloe plural gel carrier can be used the above method and be made, mainly with marine algae extract and
Aloe gel is main carriers.Seaweed extracted liquor is in thick, after mix with aloe gel, addition sodium bicarbonate, and sodium bicarbonate
It just reacts with the acidic materials in seaweed extracted liquor, generates carbon dioxide gas, gas is made a large amount of in coagulant liquid
Capillary channel, the load capacity of carrier can not only be improved, and provide quickly to be discharged into soil after oxygenation agent dissolution
Channel reduces the resistance of infiltration.And seaweed-aloe plural gel carrier has very strong hygroscopicity, can add in the later period
The rate of dissolution of fast oxygenation agent, the defect for further overcoming later period oxygenation agent releasing effect poor.In addition, seaweed-aloe is compound
Gel carrier has preferable dilution water-retaining property, can be improved the water holding capacity of mulch.
Preferably, the modified oxidized calcium the preparation method comprises the following steps: by calcium oxide and potassium hydroxide 100:0.1- in mass ratio
0.2 be added in reaction vessel be uniformly mixed, by quality be calcium oxide 4-8wt% ethylene oxide it is pressurized liquefied after be passed through reaction
In container, reaction vessel is heated to 140-160 DEG C under inert gas pressurization protection, is stirred to react 2-3h；After reaction
It is cooled to room temperature, obtains modified oxidized calcium.
In the preparation process of modified oxidized calcium, using potassium hydroxide and calcium oxide as common catalyst, make epoxy second
Alkane is polymerize on calcium oxide surface, generates polyethylene oxide layer, the effect of the polyethylene oxide layer is: since calcium oxide meets water
It reacts more violent, it is excessively high and cause security risk to may result in temperature.After polyethylene oxide is coated on calcium oxide surface,
Calcium oxide table could be slowly penetrated into after due to polyethylene oxide there is preferable water imbibition, moisture to need to first pass through its absorption
Face plays buffer function.
Preferably, the mass ratio of the release layer, slow release layer and coating layer is 1:3-5:0.4-0.6.
The preparation method of the antibacterial oxygenation particle, step are as follows:
Step 1: being dissolved adhesive with dehydrated alcohol；Simultaneously by chemical enhancement agent, natural antibacterial plant extracts, sea
Algae-aloe plural gel carrier, modified oxidized calcium are mixed evenly, and then use adhesive bonding；Successively by making after bonding
Grain, dry and screening, are made release layer.
Step 2: modified beta-cyclodextrin being mixed with the water of its 0.4-0.8 times of quality, after stirring in the pasty state, chemistry is added and increases
Oxygen agent, natural antibacterial plant extracts are simultaneously uniformly dispersed, and then dry to moisture content and are not more than 3wt%, obtain paste；With nothing
Water-ethanol dissolves adhesive, and paste and release layer are used adhesive bonding after mixing, after bonding successively by being granulated,
Dry and screening, is made slow release layer.
Step 3: 1:0.5-1.5:0.5-1.5 in mass ratio weighs chitosan, starch, gelatin respectively, is added in water simultaneously
1-3h is stirred, is then heated to 60-80 DEG C until forming homogeneous solution；By the 1- of homogeneous solution and its 0.1-0.3 times of volume
The glutaraldehyde solution of 3wt% mixes, and carries out coating to sustained release layer surface made from step 2 immediately, dries immediately after coating, is formed
Antibacterial oxygenation particle is made in coating layer.
Preparation method of the present invention avoids contact of the oxygenation agent with water, oxygenation agent quality obtained as far as possible during the preparation process
It is high, stable.
A kind of preparation method of liquid-state mulch film preparation, step are as follows:
Step 1: each raw material is weighed according to the ratio, by silica solution, soluble starch, carboxymethyl cellulose, emulsifier, defoaming agent
It is added in water and stirs evenly.
Step 2: heating water to 70-90 DEG C, polyvinyl alcohol, glutaraldehyde are added into water, is stirred evenly.It heats water to
To a certain degree, the solubility of polyvinyl alcohol, glutaraldehyde is improved.
Step 3: antibacterial oxygenation particle being added in water, is stirred evenly, liquid-state mulch film preparation is made.Due to antibacterial oxygenation
Particle is not easy largely to meet water before sprinkling, and heating, it is therefore desirable to be eventually adding, improve its stability.
After liquid-state mulch film preparation of the invention prepares, needs to be sprayed immediately, otherwise will lead to liquid-state mulch film preparation
A large amount of crosslinkings occur for middle each component, and glutaraldehyde largely consumes, and cause poor with the cementitiousness of soil after spraying.Furthermore antibacterial increases
Oxygen particle largely discharges in advance also due to meeting its active constituent of water.
The beneficial effects of the present invention are: liquid-state mulch film preparation good film-forming property of the invention, is retained effect with outstanding heat preservation
Fruit.And it also has the multiple functions such as antibacterial, oxygenation, sustained release.
Specific embodiment
The present invention will be further described with reference to the examples below.
Embodiment 1
A kind of liquid-state mulch film preparation, raw material includes following components:
Polyvinyl alcohol 20wr%,
Concentration is 25wt% silica solution 5wt%,
Soluble starch 5wt%,
Antibacterial oxygenation particle 10wt%,
Carboxymethyl cellulose 5wt%,
Glutaraldehyde 2wt%,
Emulsifier (Tween-60) 2wt%,
Defoaming agent (silicone emulsion) 1wt%,
Water surplus.
Wherein, the antibacterial oxygenation particle successively includes release layer, slow release layer and coating layer from the inside to the outside.
The release layer is by following material composition: (oil tea leaf mentions for SODIUM PERCARBONATE 40wt%, natural antibacterial plant extracts
Take object) 10wt%, seaweed-aloe plural gel carrier 43wt%, modified oxidized calcium 5wt%, povidone 2wt%.
The slow release layer is by following material composition: (oil tea leaf mentions for SODIUM PERCARBONATE 40wt%, natural antibacterial plant extracts
Take object) 10wt%, modified beta-cyclodextrin 48wt%, povidone 2wt%.
The coating layer is chitosan-starch-gelatin cross linking membrane.
The mass ratio of the release layer, slow release layer and coating layer is 1:4:0.5.
Embodiment 2
A kind of liquid-state mulch film preparation, raw material includes following components:
Polyvinyl alcohol 15wr%,
Concentration is 20wt% silica solution 7wt%,
Soluble starch 7wt%,
Antibacterial oxygenation particle 5wt%,
Carboxymethyl cellulose 7wt%,
Glutaraldehyde 3wt%,
Emulsifier (Tween-80) 3wt%,
Defoaming agent (dimethyl silicone polymer) 1.5wt%,
Water surplus.
Wherein, the antibacterial oxygenation particle successively includes release layer, slow release layer and coating layer from the inside to the outside.
The release layer is by following material composition: (garlic is extracted for calper calcium peroxide 35wt%, natural antibacterial plant extracts
Object) 10wt%, seaweed-aloe plural gel carrier 46wt%, modified oxidized calcium 6wt%, povidone 3wt%.
The slow release layer is by following material composition: (garlic is extracted for calper calcium peroxide 35wt%, natural antibacterial plant extracts
Object) 10wt%, modified beta-cyclodextrin 53wt%, povidone 2wt%.
The coating layer is chitosan-starch-gelatin cross linking membrane.
The mass ratio of the release layer, slow release layer and coating layer is 1:3:0.4.
Embodiment 3
A kind of liquid-state mulch film preparation, raw material includes following components:
Polyvinyl alcohol 25wr%,
Concentration is 30wt% silica solution 3wt%,
Soluble starch 3wt%,
Antibacterial oxygenation particle 15wt%,
Carboxymethyl cellulose 3-wt%,
Glutaraldehyde 1wt%,
Emulsifier (Span -60) 1wt%,
Defoaming agent (polypropylene glycerol aether) 0.5wt%,
Water surplus.
Wherein, the antibacterial oxygenation particle successively includes release layer, slow release layer and coating layer from the inside to the outside.
The release layer is by following material composition: urea peroxide 45wt%, natural antibacterial plant extracts (pectin)
10wt%, seaweed-aloe plural gel carrier 40wt%, modified oxidized calcium 4wt%, povidone 1wt%.
The slow release layer is by following material composition: urea peroxide 45wt%, natural antibacterial plant extracts (pectin)
10wt%, modified beta-cyclodextrin 43wt%, povidone 2wt%.
The coating layer is chitosan-starch-gelatin cross linking membrane.
The mass ratio of the release layer, slow release layer and coating layer is 1:5:0.6.
Embodiment 4
The liquid-state mulch film preparation of embodiment 1 the preparation method comprises the following steps:
Step 1: each raw material is weighed according to the ratio, by silica solution, soluble starch, carboxymethyl cellulose, emulsifier, defoaming agent
It is added in water and stirs evenly.
Step 2: heating water to 80 DEG C, polyvinyl alcohol, glutaraldehyde are added into water, is stirred evenly.
Step 3: antibacterial oxygenation particle being added in water, is stirred evenly, liquid-state mulch film preparation is made.
Wherein antibacterial oxygenation particle the preparation method comprises the following steps:
It is prefabricated standby:
The seaweed-aloe plural gel carrier is the preparation method comprises the following steps: taking seaweed to shred and being put into 75 times of quality
In water, 25min is heated at 100 DEG C；Seaweed is transferred to the concentration of its 10 times of quality molten for the sodium pyrophosphate of 4wt% after filtering
In liquid, 1h is impregnated at 55 DEG C, obtains viscous liquid；It is 50wt% that viscous liquid, which is concentrated into solid content, to thick
The aloe gel of its 1 times of quality is added in liquid and is stirred evenly；Then it is kept the temperature at 45 DEG C, adding liquid gross mass 2%
Sodium bicarbonate is stirred to react 15min, and liquid pH value is adjusted after reaction to neutrality, is finally dried to obtain seaweed-aloe plural gel
Carrier.
The modified beta-cyclodextrin the preparation method comprises the following steps: beta-cyclodextrin is added in the water of its 20 times of quality, then plus
Heat obtains beta-cyclodextrin solution to 65 DEG C of heat preservations；Respectively by silver nitrate solution, copper nitrate solution and iron nitrate solution with 7.5mL/
The rate of min, which is added in beta-cyclodextrin solution, stirs 1.5h, carries out adsorption of metal ions；It is finally cooled to room temperature, centrifugation point
From obtained modified beta-cyclodextrin after dry, crushing.Wherein, the quality of the beta-cyclodextrin and silver nitrate, copper nitrate and ferric nitrate
Than for 10:1:1:0.6.
The modified oxidized calcium the preparation method comprises the following steps: calcium oxide and potassium hydroxide 100:0.15 in mass ratio are added to instead
Answer in container be uniformly mixed, by quality be calcium oxide 6wt% ethylene oxide it is pressurized liquefied after be passed through in reaction vessel, in inertia
Reaction vessel is heated to 150 DEG C under gas pressurized protection, is stirred to react 2.5h；It is cooled to room temperature, is changed after reaction
Property calcium oxide.
Step 1: being dissolved adhesive with dehydrated alcohol；Simultaneously by chemical enhancement agent, natural antibacterial plant extracts, sea
Algae-aloe plural gel carrier, modified oxidized calcium are mixed evenly, and then use adhesive bonding；Successively by making after bonding
Grain, dry and screening, are made release layer；
Step 2: modified beta-cyclodextrin being mixed with the water of its 0.6 times of quality, after stirring in the pasty state, adds chemical enhancement
Agent, natural antibacterial plant extracts are simultaneously uniformly dispersed, and then dry to moisture content and are not more than 3wt%, obtain paste；With anhydrous
Ethyl alcohol dissolves adhesive, and paste and release layer are used adhesive bonding after mixing, successively by being granulated, doing after bonding
Dry and screening, is made slow release layer；
Step 3: 1:1:1 in mass ratio weighs chitosan, starch, gelatin respectively, is added in water and stirs 2h, then plus
Heat is to 70 DEG C until forming homogeneous solution；Homogeneous solution is mixed with the glutaraldehyde solution of the 2wt% of its 0.2 times of volume, immediately
Coating is carried out to sustained release layer surface made from step 2, is dried immediately after coating, forms coating layer, antibacterial oxygenation particle is made.
Embodiment 5
The liquid-state mulch film preparation of embodiment 2 the preparation method comprises the following steps:
A kind of preparation method of liquid-state mulch film preparation, it is characterized in that step are as follows:
Step 1: each raw material is weighed according to the ratio, by silica solution, soluble starch, carboxymethyl cellulose, emulsifier, defoaming agent
It is added in water and stirs evenly.
Step 2: heating water to 70 DEG C, polyvinyl alcohol, glutaraldehyde are added into water, is stirred evenly.
Step 3: antibacterial oxygenation particle being added in water, is stirred evenly, liquid-state mulch film preparation is made.
Wherein antibacterial oxygenation particle the preparation method comprises the following steps:
It is prefabricated standby:
The seaweed-aloe plural gel carrier is the preparation method comprises the following steps: taking seaweed to shred and being put into 50 times of quality
In water, 30min is heated at 95 DEG C；The sodium pyrophosphate for being 3wt% by the concentration that seaweed is transferred to its 5-15 times of quality after filtering
In solution, 1.5h is impregnated at 50 DEG C, obtains viscous liquid；It is 45wt% that viscous liquid, which is concentrated into solid content, to viscous
The aloe gel of its 0.5 times of quality is added in thick liquid and is stirred evenly；Then it is kept the temperature at 40 DEG C, adding liquid gross mass
1% sodium bicarbonate is stirred to react 10min, and liquid pH value is adjusted after reaction to neutrality, it is multiple to be finally dried to obtain seaweed-aloe
Close gel carrier.
The modified beta-cyclodextrin the preparation method comprises the following steps: beta-cyclodextrin is added in the water of its 15 times of quality, then plus
Heat obtains beta-cyclodextrin solution to 60 DEG C of heat preservations；Respectively by silver nitrate solution, copper nitrate solution and iron nitrate solution with 5mL/
The rate of min, which is added in beta-cyclodextrin solution, stirs 1h, carries out adsorption of metal ions；It is finally cooled to room temperature, is centrifugated,
Modified beta-cyclodextrin is made after dry, crushing.Wherein, the mass ratio of the beta-cyclodextrin and silver nitrate, copper nitrate and ferric nitrate
For 10:0.5:0.5:0.4.
The modified oxidized calcium the preparation method comprises the following steps: calcium oxide and potassium hydroxide 100:0.1 in mass ratio are added to instead
Answer in container be uniformly mixed, by quality be calcium oxide 4wt% ethylene oxide it is pressurized liquefied after be passed through in reaction vessel, in inertia
Reaction vessel is heated to 140 DEG C under gas pressurized protection, is stirred to react 3h；It is cooled to room temperature, is modified after reaction
Calcium oxide.
Step 1: being dissolved adhesive with dehydrated alcohol；Simultaneously by chemical enhancement agent, natural antibacterial plant extracts, sea
Algae-aloe plural gel carrier, modified oxidized calcium are mixed evenly, and then use adhesive bonding；Successively by making after bonding
Grain, dry and screening, are made release layer；
Step 2: modified beta-cyclodextrin being mixed with the water of its 0.4 times of quality, after stirring in the pasty state, adds chemical enhancement
Agent, natural antibacterial plant extracts are simultaneously uniformly dispersed, and then dry to moisture content and are not more than 3wt%, obtain paste；With anhydrous
Ethyl alcohol dissolves adhesive, and paste and release layer are used adhesive bonding after mixing, successively by being granulated, doing after bonding
Dry and screening, is made slow release layer；
Step 3: 1:0.5:0.5 in mass ratio weighs chitosan, starch, gelatin respectively, is added in water and stirs 1h, so
After be heated to 60 DEG C until formed homogeneous solution；Homogeneous solution is mixed with the glutaraldehyde solution of the 3wt% of its 0.1 times of volume,
Coating is carried out to sustained release layer surface made from step 2 immediately, is dried immediately after coating, coating layer is formed, antibacterial oxygenation is made
Grain.
Embodiment 6
The liquid-state mulch film preparation of embodiment 3 the preparation method comprises the following steps:
Step 1: each raw material is weighed according to the ratio, by silica solution, soluble starch, carboxymethyl cellulose, emulsifier, defoaming agent
It is added in water and stirs evenly
Step 2: heating water to 90 DEG C, polyvinyl alcohol, glutaraldehyde are added into water, is stirred evenly.
Step 3: antibacterial oxygenation particle being added in water, is stirred evenly, liquid-state mulch film preparation is made.
Wherein antibacterial oxygenation particle the preparation method comprises the following steps:
It is prefabricated standby:
The seaweed-aloe plural gel carrier is the preparation method comprises the following steps: taking seaweed to shred and being put into 100 times of quality
In water, 20min is heated at 105 DEG C；Seaweed is transferred to the concentration of its 15 times of quality molten for the sodium pyrophosphate of 5wt% after filtering
In liquid, 0.5h is impregnated at 60 DEG C, obtains viscous liquid；It is 55wt% that viscous liquid, which is concentrated into solid content, to sticky
The aloe gel of its 1.5 times of quality is added in shape liquid and is stirred evenly；Then it is kept the temperature at 50 DEG C, adding liquid gross mass
3% sodium bicarbonate is stirred to react 20min, and liquid pH value is adjusted after reaction to neutrality, it is multiple to be finally dried to obtain seaweed-aloe
Close gel carrier.
The modified beta-cyclodextrin the preparation method comprises the following steps: beta-cyclodextrin is added in the water of its 25 times of quality, then plus
Heat obtains beta-cyclodextrin solution to 70 DEG C of heat preservations；Respectively by silver nitrate solution, copper nitrate solution and iron nitrate solution with 10mL/
The rate of min, which is added in beta-cyclodextrin solution, stirs 2h, carries out adsorption of metal ions；It is finally cooled to room temperature, is centrifugated,
Modified beta-cyclodextrin is made after dry, crushing.Wherein, the mass ratio of the beta-cyclodextrin and silver nitrate, copper nitrate and ferric nitrate
For 10:1.5:1.5:0.8.
The modified oxidized calcium the preparation method comprises the following steps: calcium oxide and potassium hydroxide 100:0.2 in mass ratio are added to instead
Answer in container be uniformly mixed, by quality be calcium oxide 8wt% ethylene oxide it is pressurized liquefied after be passed through in reaction vessel, in inertia
Reaction vessel is heated to 160 DEG C under gas pressurized protection, is stirred to react 2h；It is cooled to room temperature, is modified after reaction
Calcium oxide.
Step 1: being dissolved adhesive with dehydrated alcohol；Simultaneously by chemical enhancement agent, natural antibacterial plant extracts, sea
Algae-aloe plural gel carrier, modified oxidized calcium are mixed evenly, and then use adhesive bonding；Successively by making after bonding
Grain, dry and screening, are made release layer；
Step 2: modified beta-cyclodextrin being mixed with the water of its 0.8 times of quality, after stirring in the pasty state, adds chemical enhancement
Agent, natural antibacterial plant extracts are simultaneously uniformly dispersed, and then dry to moisture content and are not more than 3wt%, obtain paste；With anhydrous
Ethyl alcohol dissolves adhesive, and paste and release layer are used adhesive bonding after mixing, successively by being granulated, doing after bonding
Dry and screening, is made slow release layer；
Step 3: 1:1.5:1.5 in mass ratio weighs chitosan, starch, gelatin respectively, is added in water and stirs 3h, so
After be heated to 80 DEG C until formed homogeneous solution；Homogeneous solution is mixed with the glutaraldehyde solution of the 1wt% of its 0.3 times of volume,
Coating is carried out to sustained release layer surface made from step 2 immediately, is dried immediately after coating, coating layer is formed, antibacterial oxygenation is made
Grain.
Embodiment 7
The liquid-state mulch film preparation of the embodiment of the present invention 1 is sprayed to soil surface, fountain height is every square metre of 1000mL,
Under conditions of soil mean temperature is 10 DEG C or so, 4-6 DEG C of the soil moisture is able to ascend after film forming, soil moisture content can be improved
20-30%.Meanwhile oxygenation timeliness is 10-15 days.
It is raw materials used in the present invention, it is the common raw material of this field unless otherwise noted；Method therefor in the present invention,
It unless otherwise noted, is the conventional method of this field.
Claims (8)
1. a kind of liquid-state mulch film preparation, it is characterized in that: its raw material includes following components:
Polyvinyl alcohol 15-25wr%,
Silica solution 3-7wt%,
Soluble starch 3-7wt%,
Antibacterial oxygenation particle 5-15wt%,
Carboxymethyl cellulose 3-7wt%,
Glutaraldehyde 1-3wt%,
Emulsifier 1-3wt%,
Defoaming agent 0.5-1.5wt%,
Water surplus；
The antibacterial oxygenation particle successively includes release layer, slow release layer and coating layer from the inside to the outside；The release layer is by following object
Matter composition: chemical enhancement agent 35-45wt%, natural antibacterial plant extracts 5-15wt%, seaweed-aloe plural gel carrier
40-46wt%, modified oxidized calcium 4-6wt%, adhesive 1-3wt%；The slow release layer is by following material composition: chemical enhancement agent
35-45wt%, natural antibacterial plant extracts 5-15wt%, modified beta-cyclodextrin 43-53wt%, adhesive 1-3wt%；It is described
Coating layer is chitosan-starch-gelatin cross linking membrane；
The seaweed-aloe plural gel carrier is the preparation method comprises the following steps: taking seaweed to shred and being put into 50-100 times of quality
In water, 20-30min is heated at 95-105 DEG C；Seaweed is transferred to the concentration of its 5-15 times of quality for 3-5wt%'s after filtering
In sodium pyrophosphate solution, 0.5-1.5h is impregnated at 50-60 DEG C, obtains viscous liquid；Viscous liquid is concentrated into and is contained admittedly
Amount is 45-55wt%, and the aloe gel of its 0.5-1.5 times of quality is added into viscous liquid and is stirred evenly；Then in 40-
It is kept the temperature at 50 DEG C, the sodium bicarbonate of adding liquid gross mass 1-3% is stirred to react 10-20min, adjusts liquid pH value after reaction
To neutrality, it is finally dried to obtain seaweed-aloe plural gel carrier.
2. a kind of liquid-state mulch film preparation according to claim 1, it is characterized in that: the concentration of the silica solution is 20-
30wt%.
3. a kind of liquid-state mulch film preparation according to claim 1, it is characterized in that: the emulsifier is Tween-60, tween-
80, Span -60 or Span-80；The defoaming agent is silicone emulsion, dimethyl silicone polymer, polypropylene glycerol aether or polyoxy
Propylene polyoxyethylene glycerol ether.
4. a kind of liquid-state mulch film preparation according to claim 1, it is characterized in that: the preparation method of the modified beta-cyclodextrin
Are as follows: beta-cyclodextrin is added in the water of its 15-25 times of quality, is then heated to 60-70 DEG C of heat preservation, it is molten to obtain beta-cyclodextrin
Liquid；Silver nitrate solution, copper nitrate solution and iron nitrate solution are added in beta-cyclodextrin solution respectively and stir 1-2h, carries out gold
Belong to ionic adsorption；It is finally cooled to room temperature, is centrifugated, modified beta-cyclodextrin is made after dry, crushing.
5. a kind of liquid-state mulch film preparation according to claim 4, it is characterized in that: the beta-cyclodextrin and silver nitrate, nitric acid
The mass ratio of copper and ferric nitrate is 10: 0.5-1.5: 0.5-1.5: 0.4-0.8；And silver nitrate solution, copper nitrate solution and nitric acid
The adding speed of ferrous solution is 5-10mL/min.
6. a kind of liquid-state mulch film preparation according to claim 1, it is characterized in that: the natural antibacterial plant extracts is oil
At least one of tea tree leaf extract, garlic P.E, pectin；The chemical enhancement agent be calper calcium peroxide, urea peroxide and
At least one of SODIUM PERCARBONATE；Described adhesive is povidone.
7. a kind of liquid-state mulch film preparation according to claim 1, it is characterized in that: the release layer, slow release layer and coating layer
Mass ratio be 1: 3-5: 0.4-0.6.
8. a kind of preparation method of liquid-state mulch film preparation described in one of -7 according to claim 1, it is characterized in that step are as follows:
Step 1: weighing each raw material according to the ratio, silica solution, soluble starch, carboxymethyl cellulose, emulsifier, defoaming agent are added
Into water and stir evenly；
Step 2: heating water to 70-90 DEG C, polyvinyl alcohol, glutaraldehyde are added into water, is stirred evenly；
Step 3: antibacterial oxygenation particle being added in water, is stirred evenly, liquid-state mulch film preparation is made.
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| CN109526492A (en) * | 2018-12-11 | 2019-03-29 | 烟台沃斯生物技术有限公司 | A kind of application method starched |
| CN110423380A (en) * | 2019-08-12 | 2019-11-08 | 山东农业大学 | A kind of degradable liquid mulch film and preparation method thereof |
| CN111108989A (en) * | 2020-01-06 | 2020-05-08 | 深圳市常治互联网技术开发有限公司 | Fully-degradable agricultural biological intelligent mulching film and preparation method thereof |
| CN113072882B (en) * | 2021-03-26 | 2021-12-24 | 辽宁顺屹农业科技有限公司 | Liquid full-degradable mulching film and preparation method thereof |
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